ABS Front Outlet Valve Solenoid Circuit
2004-2016 Aston Martin DB9 6.0L V12
Description
Malfunction in the front ABS outlet valve solenoid, which releases brake pressure during ABS activation.
Symptoms
- ABS light on
- Front brakes lock during ABS event
- Brake pedal hard during ABS activation
- Poor ABS performance
Common Causes
- Outlet valve solenoid stuck
- ABS modulator internal failure
- Electrical fault in solenoid driver
- Contaminated brake fluid causing valve sticking
Diagnostic Steps
- Test solenoid resistance at module connector
- Command valve with scan tool
- Check brake fluid condition
- Inspect module connector
- Check for related pump motor codes
Repair Notes
Replace ABS hydraulic modulator if solenoid is faulty. Flush brake fluid.
Related Codes
Other Chassis Codes
- C0021LF Wheel Speed Sensor Range/Performance
- C0022RF Wheel Speed Sensor Range/Performance
- C0023LR Wheel Speed Sensor Range/Performance
- C0024RR Wheel Speed Sensor Range/Performance
- C0025LF Wheel Speed Sensor Circuit Intermittent
- C0026RF Wheel Speed Sensor Circuit Intermittent
- C0027LR Wheel Speed Sensor Circuit Intermittent
- C0028RR Wheel Speed Sensor Circuit Intermittent
- C0035Left Front Wheel Speed Sensor Circuit
- C0036Left Front Wheel Speed Signal Erratic
C0056 on Other Vehicles
Aston Martin DB11
2016-2024 4.0L V8 Twin Turbo
Aston Martin DB11
2016-2024 5.2L V12 Twin Turbo
Aston Martin DB7
1994-2003 3.2L I6 Supercharged
Aston Martin DBS Superleggera
2019-2024 5.2L V12 Twin Turbo
Aston Martin DBX
2020-2024 4.0L V8 Twin Turbo
Aston Martin Vantage
2005-2024 4.7L V8
Aston Martin Vantage
2018-2024 4.0L V8 Twin Turbo
Common Questions
What does code C0056 mean on a 2004-2016 Aston Martin DB9?
C0056 stands for "ABS Front Outlet Valve Solenoid Circuit". Malfunction in the front ABS outlet valve solenoid, which releases brake pressure during ABS activation.
What are the symptoms of C0056 on a Aston Martin DB9?
Common symptoms of C0056 include: ABS light on, Front brakes lock during ABS event, Brake pedal hard during ABS activation, Poor ABS performance.
What causes C0056 on a 2004-2016 Aston Martin DB9?
Common causes of C0056 include: Outlet valve solenoid stuck, ABS modulator internal failure, Electrical fault in solenoid driver, Contaminated brake fluid causing valve sticking.